Method of wet-cleaning gases containing sulfur dioxide, halogens

Details Method of wet-cleaning gases containing sulfur dioxide, halogens Method of wet-cleaning gases containing sulfur dioxide, halogens

1977-03-30

1979-02-06

Nozick, Bernard

Gas separation

Means within gas stream for conducting concentrate to collector

55 72, 55 73, 423210, 423242, 423531, B01D 1900

Patent

active

041382315

ABSTRACT:
The invention comprises a method of wet-cleaning gases containing sulfur dioxide, halogens together with arsenic and/or arsenic compounds obtained in a pyrometallurgical treatment of sulfidic materials. The gases are washed in a diluted sulfuric acid circulating in a closed circuit, from which arsenic is recovered. The gases are then cooled to water condensation whereby the halogens are substantially completely taken up in said condensate and separated. The separated condensate is then discharged to a recipient after precipitation of residual arsenic and neutralization.

REFERENCES:
patent: 2028318 (1936-01-01), Carter
patent: 2416011 (1947-02-01), Latchum, Jr.
patent: 3677696 (1972-07-01), Bryk et al.
patent: 3899308 (1975-08-01), Petersson

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